Victor manuel ariza



(No M odl.)

V. M. ARIZA. RULEE.

NO. 471,459.` Patentpd'Mar. 22, 1892.

/N VENTOH A TTOHNEYS surface of the cylindrical casing.

NITED `VATENT FFICE.

VICTOR MANUEL ARIZA, OF MARACAIBO, VENEZUELA.

RULER.

SPECIFICATION forming part of Letters Patent No. 471,459, dated March22, 1892.

Application filed March 4, 1891. $erial No. 383,665. (No model.)

.To all whom it may concern,.-

Be it known that I, VICTOR MANUEL ARIZA, of Maracaibo, in the Republicof Venezuela, South America, have invented a new and Improved Ruler, ofwhich the following is a specification, reference being had to theannexed drawings, forming a part thereof, in which- Figure l is aperspective view of my improved ruler. Fig. 2 is a side elevation of oneend of the ruler, and Fig. 3 is an end elevation With the end of theruler-casing removed.

Similar letters of reference indicate corresponding parts in a ll theviews.

The object of my invention is to provide a ruler for the use ofdraftsmen and others which Will avoid the blotting and soiling of thepaper by any ink that may accidentally get on the ruler; also, toprovide a ruler having a stop for indicating the length of the lines,and mechanism for spacing.

My invention consists in the combination, With a casing provided With anabsorbent lining, of a roller fitted to the casing and arranged to touchthe lining, pawl-and-ratchet mechanism for turning the roller, and ascale and adjustable arm for gaging the length of the lines, all as Willbe hereinafter fully described. I In the semi-cylindrical casing A,provided with the ends a, is journaled a cylindrical roller B, of hardWood or other suitable material, which is adapted to roll in contactWith an absorbent lining b, attached to the inner To one end of theroller B is attached a ratchet-Wheel C, and upon the pivotal screw c ofthe roller is loosely mounted a lever d, to Which is pivoted aspring-pressed pawl e, adapted to engage the ratchet-Wheel C.

The top of the semi-cylindrical casing A is furnished With a bar D,having undercut edges and furnished on its upper surface Withgraduations, as shown. To the bar D is fitted an arm E, Which Curvesdownwardly over the roller B and is bent outwardly to serve as a stopfor limiting the length of a line drawn along the roller B. The arm E isfurnished With a set-screw f for clamping it in any desired positionalong the length of the bar D. The casing A is furnished With a handleF,

vby Which the ruler is moved along the surface to be ruled.

The ruler is moved over the paper in the direction required to cause theroller B to revolve toward the outer edge of the bar D, so that beforethe surface of the rolleris brought into contact With the paper any inkadhering thereto Will be removed by the absorbent lining b, therebypreventing the blotting of the paper by the ink carried by the roller.

VVhen it is desired to use the ruler in making spaced lines, the ruleris moved forward step by step by means of the paWl-and-ratchet mechanismalready described.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- 1. A ruler formed of a roller of non-'absorbentmaterial journaled in a casing enveloping a portion of itscircumference, the said casing I V being provided With an absorbentlining attached thereto and cout-acting With the roller, substantiallyas specified.

2. The combination of the roller B, the casing A, furnished with theabsorbent lining b, the ratchet-Wheel C, attached to the roller, thelever d, mounted loosely on the pivot of the roller, and thespring-pressed pawl e, carried by the lever d, substantially asspecified.

3. The combination of the casing A, f urnished with the graduated bar D,the arm E, fitted to the bar, and the roller B, journaled in the casing,substantially as specified.

4. The combination of the roller B, the casing A, provided With thehandle F, and pawland-ratehet mechanism for turning the roller With astep-by-step motion, substantially as specified.

. VICTOR MANUEL ARIZA.

Witnesses:

FAoroN So'rs, J osn YGNAcIo VALBUENA SARIoL.

